A driving device for dynamic balance detection of main reducer assembly

Abstract

The utility model provides a driving device for dynamic balance detection of a main reducer assembly, including a transmission rod, one end of which is connected to a first spring leaf, which is connected to the main shaft flange; the other end of the transmission rod is connected to a positioning plate, and the outer end surface of the positioning plate is provided with a pin, which is inserted into the flange hole of the main reducer assembly. The utility model improves the positioning accuracy and reduces the balance interference by positioning the positioning plate and the flange hole of the main reducer assembly; the flange of the main reducer assembly is driven to rotate by the pin on the outer side of the positioning plate, and the positioning is accurate and reliable; through the flexible deformation of the first spring leaf and the slender transmission rod, the balance detection accuracy of the main reducer assembly is not affected by the radial tension, the vibration interference in the rotation process caused by the centering error between the main reducer assembly and the main shaft is isolated, and the influence of the main shaft's own imbalance on the balance detection accuracy of the main reducer assembly is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of reducer balance detection, and in particular to a driving device for dynamic balance detection of a main reducer assembly. Background Art

[0002] The main reducer assembly includes the main reducer and the differential. The main function of the main reducer is to reduce speed and increase torque, improve driving force, and ensure that the car can travel under sufficient driving force. The rear-wheel drive car also changes the transmission direction of power through the bevel and bevel gears of the main reducer; the function of the differential is to distribute power to the left and right wheels, ensuring that the left and right wheels rotate at different speeds when the vehicle turns, ensuring normal turning of the vehicle.

[0003] Dynamic balance refers to the vibration degree of the main shaft when it rotates at high speed. During the road test of the whole vehicle, the phenomenon of roaring and ear pressing is related to the dynamic imbalance of the transmission system. Therefore, before the assembly of the whole vehicle, the dynamic balance of the main reducer assembly in the transmission system needs to be tested and corrected to improve the product quality and make the main reducer assembly meet the performance requirements of the whole vehicle.

[0004] The dynamic balancing of the axle main reducer assembly has always been a major technical challenge in the industry. Due to its extremely high precision requirements and the large positioning error between the main reducer flange and the main shaft of the drive device, the balance detection and correction are difficult. At present, there are two main balancing drive methods used at home and abroad. One is to connect the main shaft of the drive device with the outer circle of the main reducer assembly flange through a belt, and directly drive the outer circle of the main reducer assembly flange to rotate through the belt; the other is to use a rigid universal joint and a locating pin to drive the main reducer assembly flange to rotate.

[0005] The belt is used to directly drive the outer circle of the flange of the main reducer assembly. The characteristics of this method are simple structure and low requirements for the drive part. However, this method is noisy. The belt tension causes the main reducer assembly to be subjected to radial tension, which has a certain impact on the measurement accuracy. At the same time, the belt drive position is also the drilling position. The drilling iron chips are easily adhered to the belt and scratched on the outer circle of the flange, affecting the appearance quality of the workpiece.

[0006] The method of using a rigid universal joint and a locating pin to drive the main reducer assembly flange is characterized by a complex structure and high requirements for equipment processing and assembly accuracy. The imbalance of the balancing spindle and the rigid universal joint itself can easily interfere with the workpiece balance measurement. Summary of the invention

[0007] The present application provides a driving device for dynamic balance detection of a main reducer assembly, which solves the problems of high noise when the existing driving device drives the main reducer assembly, measurement accuracy being affected by radial tension, and complex structure.

[0008] The present application provides a driving device for dynamic balance detection of a main reducer assembly, comprising a transmission rod, one end of which is connected to a first spring leaf, and the first spring leaf is connected to a main shaft flange; the other end of the transmission rod is connected to a positioning plate, and the outer end surface of the positioning plate is provided with a pin, and the pin is inserted into the flange hole of the main reducer assembly.

[0009] In the technical solution provided in the present application, the positioning accuracy is improved and the balance interference is reduced by positioning the positioning plate and the flange hole of the main reducer assembly; the flange of the main reducer assembly is driven to rotate by the pin on the outside of the positioning plate, and the positioning is accurate and reliable; through the flexible deformation of the first reed and the slender transmission rod, the balance detection accuracy of the main reducer assembly is not affected by the radial tension, and the vibration interference in the rotation process caused by the alignment error between the main reducer assembly and the main shaft is isolated, thereby reducing the influence of the main shaft's own imbalance on the balance detection accuracy of the main reducer assembly.

[0010] In some embodiments, the outer ring of the first reed is provided with a plurality of first assembly holes for connecting with the flange holes of the main shaft, thereby improving the positioning accuracy of the first reed and the main shaft.

[0011] In some embodiments, a second reed is connected between the transmission rod and the positioning plate. By connecting the second reed between the transmission rod and the positioning plate, vibration interference during the rotation of the main shaft and the main reducer is further isolated, and the influence of the main shaft's own imbalance on the balance detection accuracy of the main reducer assembly is further reduced.

[0012] In some embodiments, the outer ring of the second spring is provided with a plurality of second assembly holes for connecting with the positioning plate; the inner side of the positioning plate is provided with a positioning groove, the inner diameter of the positioning groove matches the outer diameter of the second spring, and the positioning groove is provided with a plurality of third assembly holes corresponding to the second assembly holes; by providing the positioning groove on the inner side of the positioning plate, positioning and matching with the second spring is facilitated, and the second spring is connected and fixed to the positioning plate by bolts matching the second assembly holes and the third assembly holes, thereby improving the assembly accuracy and firmness of the second spring and the positioning plate.

[0013] In some embodiments, the first reed and the second reed both include a circular reed body, and the end surface of the reed body is provided with a plurality of arc-shaped holes and grooves. When the inner and outer sides of the reed body are subjected to inconsistent forces, the reed body can achieve flexible deformation through the arc-shaped holes and grooves.

[0014] In some embodiments, a first positioning hole is provided in the middle of the spring body, and a plurality of fourth assembly holes are provided around the first positioning hole; a flange is provided at the end of the transmission rod, and a positioning boss matching the first positioning hole is provided on the outer end face of the flange, and the positioning boss is embedded in the first positioning hole, and a plurality of fifth assembly holes corresponding to the fourth assembly holes are provided on the end face of the flange at the end of the transmission rod; the fifth assembly hole is provided on the end face of the flange at the end of the transmission rod to match the fourth assembly hole on the spring body, and the assembly is fixed by bolts, thereby improving the assembly accuracy and firmness of the spring body and the transmission rod; the positioning boss matching the first positioning hole in the middle of the spring body is provided on the outer end face of the flange, thereby facilitating the positioning and matching of the spring body and the flange at the end of the transmission rod.

[0015] In some embodiments, the reed body is made of spring steel material.

[0016] In some embodiments, the outer ring of the positioning plate is provided with a plurality of second positioning holes, and the inner diameter of the second positioning holes matches the outer diameter of the pull pin; the tail of the pull pin is connected to a mounting block, and the mounting block is provided with a sixth assembly hole at positions corresponding to both sides of the pull pin, and the two sides of the second positioning hole on the positioning plate are provided with a seventh assembly hole corresponding to the sixth assembly hole; the pull pin is fixed to the outer ring of the positioning plate by bolts in combination with the sixth assembly hole and the seventh assembly hole, so as to facilitate replacement.

[0017] In some embodiments, the outer ring of the positioning plate is provided with a plurality of counterweight holes for installing counterweight blocks, which can adjust the imbalance of the positioning plate assembly itself, thereby reducing the imbalance caused by the positioning plate's processing error and assembly error, and improving the balance detection accuracy of the main reducer assembly.

[0018] In some embodiments, the transmission rod is made of medium carbon steel.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in this application are used to illustrate preferred embodiments, so that those skilled in the art can clearly understand various other advantages and benefits, and should not be considered as limitations of this application. In addition, the same reference numerals are used throughout the drawings to represent the same or similar components.

[0021] Figure 1 This is a schematic structural diagram of a driving device for dynamic balance detection of a main reducer assembly in one embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the assembly structure of the transmission rod and the first reed in one embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the assembly structure of the transmission rod, the second spring leaf, and the positioning plate in one embodiment of the present application;

[0024] Icons: 1. Transmission rod; 2. First reed; 3. Positioning plate; 4. Push pin; 5. First assembly hole; 6. Second reed; 7. Second assembly hole; 8. Positioning groove; 9. Third assembly hole; 10. Arc-shaped hole groove; 11. First positioning hole; 12. Fourth assembly hole; 13. Flange; 14. Positioning boss; 15. Fifth assembly hole; 16. Second positioning hole; 17. Mounting block; 18. Sixth assembly hole; 19. Seventh assembly hole; 20. Counterweight hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), unless otherwise clearly and specifically defined.

[0028] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0029] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0030] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0031] See also Figure 1-Figure 3 The embodiment of the present application provides a driving device for dynamic balancing detection of a main reducer assembly, including a transmission rod 1, one end of which is connected to a first spring leaf 2, and the first spring leaf 2 is connected to a main shaft flange; the other end of the transmission rod 1 is connected to a positioning plate 3, and the outer end surface of the positioning plate 3 is provided with a pin 4, and the pin 4 is inserted into the flange hole of the main reducer assembly.

[0032] In the technical solution provided in the present application, the positioning accuracy is improved and the balance interference is reduced by positioning the positioning plate 3 and the flange hole of the main reducer assembly; the flange of the main reducer assembly is driven to rotate by the pin 4 on the outside of the positioning plate 3, and the positioning is accurate and reliable; through the flexible deformation of the first reed 2 and the slender transmission rod 1, the balance detection accuracy of the main reducer assembly is not affected by the radial tension, and the vibration interference in the rotation process caused by the centering error between the main reducer assembly and the main shaft is isolated, thereby reducing the influence of the main shaft's own imbalance on the balance detection accuracy of the main reducer assembly.

[0033] Please continue reading Figure 2 In some embodiments, the outer ring of the first reed 2 (evenly arranged along the circumferential direction) is provided with a plurality of first assembly holes 5 for connecting with the flange holes of the main shaft, thereby improving the positioning accuracy of the first reed 2 and the main shaft.

[0034] Please continue reading Figure 3In some embodiments, a second reed 6 is also connected between the transmission rod 1 and the positioning plate 3. By connecting the second reed 6 between the transmission rod 1 and the positioning plate 3, the vibration interference during the rotation of the main shaft and the main reducer is further isolated, and the influence of the main shaft's own imbalance on the balance detection accuracy of the main reducer assembly is further reduced.

[0035] Please continue reading Figure 3 In some embodiments, the outer ring of the second spring 6 (evenly arranged along the circumference) is provided with a plurality of second assembly holes 7 for connecting with the positioning plate 3; a positioning groove 8 is provided on the inner side of the positioning plate 3, and the inner diameter of the positioning groove 8 matches the outer diameter of the second spring 6, and a plurality of third assembly holes 9 (evenly arranged along the circumference) corresponding to the second assembly holes 7 are provided in the positioning groove 8; by providing the positioning groove 8 on the inner side of the positioning plate 3, it is convenient to position and match with the second spring 6, and the second spring 6 is connected and fixed to the positioning plate 3 by bolts in conjunction with the second assembly holes 7 and the third assembly holes 9, thereby improving the assembly accuracy and firmness of the second spring 6 and the positioning plate 3.

[0036] Please continue reading Figure 2 , Figure 3 In some embodiments, the first reed 2 and the second reed 6 both include a circular reed body, and the end face of the reed body is provided with a plurality of arc-shaped holes and grooves 10 (arranged concentrically with the reed body). When the inner and outer sides of the reed body are subjected to inconsistent forces, the reed body can achieve flexible deformation through the arc-shaped holes and grooves 10.

[0037] Please continue reading Figure 2 In some embodiments, a first positioning hole 11 is provided in the middle of the spring body, and a plurality of fourth assembly holes 12 are provided around the first positioning hole 11 (evenly arranged along the circumferential direction); a flange 13 is provided at the end of the transmission rod 1, and a positioning boss 14 matching the first positioning hole 11 is provided on the outer end face of the flange 13, and the positioning boss 14 is embedded in the first positioning hole 11, and a plurality of fifth assembly holes 15 corresponding to the fourth assembly holes 12 are provided on the end face of the flange 13 at the end of the transmission rod 1 (evenly arranged along the circumferential direction); by providing the fifth assembly hole 15 on the end face of the flange 13 at the end of the transmission rod 1 to match the fourth assembly hole 12 on the spring body, and fixing them by bolt connection, the assembly accuracy and firmness of the spring body and the transmission rod 1 are improved; by providing the positioning boss 14 matching the first positioning hole 11 in the middle of the spring body on the outer end face of the flange 13, the positioning and matching of the spring body and the flange 13 at the end of the transmission rod 1 are facilitated.

[0038] In some embodiments, the spring body is made of spring steel material, which has good deformation resistance and high tensile fatigue strength, can withstand severe twisting and bending without deformation, and can quickly restore to its original state. In the specific implementation process, other materials with the same or similar physical properties can also be used.

[0039] Please continue reading Figure 3 In some embodiments, the outer ring of the positioning plate 3 (evenly arranged along the circumference) is provided with a plurality of second positioning holes 16, and the inner diameter of the second positioning hole 16 matches the outer diameter of the pin 4; the tail of the pin 4 is connected to a mounting block 17, and the mounting block 17 is provided with a sixth assembly hole 18 at positions corresponding to both sides of the pin 4, and the second positioning holes 16 on the positioning plate 3 are provided with seventh assembly holes 19 corresponding to the sixth assembly holes 18 on both sides; the pin 4 is fixedly mounted to the outer ring of the positioning plate 3 by bolts in combination with the sixth assembly holes 18 and the seventh assembly holes 19, so as to facilitate replacement.

[0040] Please continue reading Figure 3 In some embodiments, the outer ring of the positioning plate 3 (evenly arranged along the circumference) is provided with a plurality of counterweight holes 20 for installing counterweight blocks, which can adjust the imbalance of the positioning plate 3 assembly itself, thereby reducing the imbalance caused by the positioning plate 3 due to its processing error and assembly error, and improving the balance detection accuracy of the main reducer assembly.

[0041] In some embodiments, the transmission rod 1 is made of medium carbon steel, which is light in weight and high in strength. Since the transmission rod 1 is subject to vibration when rotating, reducing the weight can effectively reduce the amplitude of the vibration. At the same time, the slender transmission rod 1 itself can also be flexibly deformed. In the specific implementation process, other materials with the same or similar physical properties can also be used.

[0042] The assembly process of the drive device of this embodiment is as follows:

[0043] First, assemble the first spring 2 and the second spring 6 to the flanges 13 at both ends of the transmission rod 1 respectively, and connect and fix the fourth assembly hole 12 of the inner circle of the spring body with the fifth assembly hole 15 on the end face of the flange 13 by bolts; then embed the second spring 6 into the positioning groove 8 on the inner end face of the positioning plate 3, and connect and fix the second assembly hole 7 of the outer circle of the second spring 6 with the third assembly hole 9 on the end face of the positioning groove 8 by bolts; then insert the detent pin 4 into the second positioning hole 16 from the inner end face of the positioning plate 3, and the front end of the detent pin 4 passes through the outer end face of the positioning plate 3, and connect and fix the sixth assembly hole 18 on the mounting block 17 at the rear end of the detent pin 4 with the seventh assembly holes 19 on both sides of the second positioning hole 16 on the positioning plate 3 by bolts; finally, connect and fix the first assembly hole 5 on the outer circle of the first spring 2 with the flange hole of the main shaft of the driving device by bolts, and insert the detent pin 4 on the positioning plate 3 into the flange hole of the main reducer assembly. When performing the dynamic balance test of the main reducer assembly, the transmission rod 1 is driven to rotate by the main shaft, and the transmission rod 1 drives the main reducer assembly to rotate with the help of the positioning plate 3 and the pin 4. During the test, the first spring 2 and the second spring 6 at both ends of the transmission rod 1 and the flexible deformation of the slender transmission rod 1 itself can eliminate the position error between the main shaft and the main reducer assembly, reduce the mutual influence between the unbalance amount at the main shaft end and the unbalance amount at the main reducer assembly end, thereby improving the accuracy of the dynamic balance test of the main reducer assembly.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A driving device for dynamic balance detection of a main reducer assembly, characterized in that: The invention comprises a transmission rod (1), one end of which is connected to a first spring leaf (2), and the first spring leaf (2) is connected to a main shaft flange; the other end of the transmission rod (1) is connected to a positioning plate (3), and the outer end surface of the positioning plate (3) is provided with a detent pin (4), and the detent pin (4) is inserted into a flange hole of the main reducer assembly.

2. A driving device for dynamic balance detection of a main reducer assembly according to claim 1, characterized in that: The outer ring of the first spring leaf (2) is provided with a plurality of first assembly holes (5) for connecting with the flange holes of the main shaft.

3. The driving device for dynamic balance detection of a main reducer assembly according to claim 1, characterized in that: A second spring leaf (6) is also connected between the transmission rod (1) and the positioning plate (3).

4. A driving device for dynamic balance detection of a main reducer assembly according to claim 3, characterized in that: The outer ring of the second spring leaf (6) is provided with a plurality of second assembly holes (7) for connecting with the positioning plate (3); the inner side of the positioning plate (3) is provided with a positioning groove (8), the inner diameter of the positioning groove (8) matches the outer diameter of the second spring leaf (6), and the positioning groove (8) is provided with a plurality of third assembly holes (9) corresponding to the second assembly holes (7).

5. The driving device for dynamic balance detection of a main reducer assembly according to claim 3, characterized in that: The first reed (2) and the second reed (6) both comprise a circular reed body, and the end surface of the reed body is provided with a plurality of arc-shaped slots (10).

6. A driving device for dynamic balance detection of a main reducer assembly according to claim 5, characterized in that: A first positioning hole (11) is provided in the middle of the leaf spring body, and a plurality of fourth assembly holes (12) are provided around the first positioning hole (11); a flange (13) is provided at the end of the transmission rod (1), and a positioning boss (14) matching the first positioning hole (11) is provided on the outer end surface of the flange (13), and the positioning boss (14) is embedded in the first positioning hole (11); and a plurality of fifth assembly holes (15) corresponding to the fourth assembly holes (12) are provided on the end surface of the flange (13).

7. A driving device for dynamic balance detection of a main reducer assembly according to claim 5, characterized in that: The reed body is made of spring steel material.

8. The driving device for dynamic balance detection of a main reducer assembly according to claim 1, characterized in that: The outer ring of the positioning plate (3) is provided with a plurality of second positioning holes (16), the inner diameter of the second positioning holes (16) matches the outer diameter of the detent pin (4); the tail of the detent pin (4) is connected with a mounting block (17), the mounting block (17) is provided with sixth assembly holes (18) at positions corresponding to both sides of the detent pin (4), and the second positioning holes (16) on the positioning plate (3) are provided with seventh assembly holes (19) corresponding to the sixth assembly holes (18) on both sides.

9. The driving device for dynamic balance detection of a main reducer assembly according to claim 1, characterized in that: The outer ring of the positioning plate (3) is provided with a plurality of counterweight holes (20) for installing counterweight blocks.

10. A driving device for dynamic balance detection of a main reducer assembly according to claim 1, characterized in that: The transmission rod (1) is made of medium carbon steel.

Images